Artist Jo Blakeley who blogs at Pickled Jo has created some wonderful caricatures from the Coronation Street tram crash and lots of other great caricatures as well of Corrie folk.
Have a look at them all at Pickled Jo. The Tram crash ones are about halfway down the page. There are a couple of others that show a new character or two but only one contains a minor spoiler and even that, for Canadians, it's not really obvious at this point. They're really good and worth having a look!